PEOPLE's Most Intriguing Newsmakers Revealed

For Sandra Bullock, 2010 was the year that changed everything: She became a mother to son Louis, ended her five-year marriage to Jesse James and reached new career heights with her emotional Oscar win for The Blind Side.

It’s only fitting, then, that the superstar, 46, scored the top spot as Woman of the Year in PEOPLE’s new Year-End issue. Of the actress’s life-altering 2010, says a source, “Bad things happen, but she celebrates the good ones. And Louis is a wonderful celebration of good things.”